Plastic is a term generally used to describe synthetic solid materials made from organic polymers which are easily modeled and shaped during the manufacturing process to create a wide variety of shapes and densities.
About Running Shoes:
Running Shoes are footwear designed for maximum support and comfort for runners. Running Shoes often feature extra cushioning to absorb impact from the surface running upon. Running Shoes may also feature comfort technology consisting of all types of support and antibacterial linings.
Brooks White Plastic $100 - $150 Womens Running Shoes